Pump-jack



H. F. ALEXIS AND M. OLSON.

PUMP JACK.

APPLICATION FILED SEPT. I9, 1917.

1,345, 980. Patented July 6, 1920.

UITED HTA'EE PATENT OFFIQE.

PUMP-JACK.

Application filed September 19, 1917.

To all whom it may concern:

Be it known that we, (1) HENRY F. linens and (2) Macnus OLsoN, (1) a citizen of the United States, and (2) a subject of the King of Sweden, residin at Fishlake, in the county of Chicago and dtate of Minnesota, have invented certain new and useful Improvements in Pump-Jacks; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in pump jacks.

The object of this invention is to improve the construction of pump jacks and to so construct the pump jack as to render it applicable to pumps having reciprocating suction rods, so that all strain may be relieved from the pump during the operation of the suction rod.

A further object of this invention is to provide a pump jack capable of being secured or attached around the base of an ordinary pump and equipped with novel operating means which is removably at tached to the suction rod of the pump to operate the latter.

A still further object of this invention is to provide a pump jack having a hollow pillow box which is capable of being removably secured to the upper part of the base and surrounds the pump casing, a collar secured to the pump casing and surrounding the reciprocating rod and operating means attached to the reciprocating suction rod and to the pillow box operating the pump.

A still further object of this invention is to provide a pump jack of this character, which will be simple, practical, and comparatively inexpensive in construction, and one that can be manufactured and sold at a low cost.

W'ith these and other objects in view, the invention consists in the novel combination and arrangement of parts hereinafter more fully described and set forth in the claims hereto appended.

In the drawing Figure 1 is a side elevation of a pump equipped with our improved pump jack,

Fig. 2 is a vertical sectional view taken through the same,

Specification of Letters Patent.

Patented July 6, 1920.

Serial No. 192,135.

Fig. 3 is a perspective view of the pillow box,

Fig. 1 is a detail sectional view illustrating the removable bearing bushings, and

Fig. 5 is a detail sectional view illustrating another bearing bushing Like numerals of reference designate corresponding parts in all the figures of the drawings.

Referring to the drawings, the numeral 5 designates a base upon which the pump of any ordinary construction now in general use is secured. The pump includes the usual casing 6, having a base 7 which is secured to the upper side of the base 5. The casing is provided with a spout 8 and reciprocating in the casing of the pump is the sucker rod 9. The above described device constitutes a pump of the type now in general use.

@ur improved pump jack consists of a pillow box 10 which is hollow and comprises a rear wall 11, side walls 12, and a front wall 13. The side walls taper downwardly from their medial portions to the front wall as illustrated at 1 1. The lower longitudinal edges of the side walls are provided with spaced laterally extending attaching lugs 15 which facilitates the securing of the pillow box to the upper side of the base 5 and about the casing 6 of the pump. The side walls 12 of the pillow box are provided intermediate their ends with a circular enlargement 16 which circular enlargement is provided with a central opening and secured to the circular enlargement and surrounding said opening are the bearing bushings 17. A stub shaft 18 is rotatably and removably mounted in each of the bearing bushings 17 and enlargement 16 and removably held therein by the bolt 19. The inner ends of the stub shafts project beyond the inner surfaces of the side walls 12 as illustrated in Fig. 5 of the drawing.

A relatively large gear wheel 20 is keyed to the inner end of each stub shaft 18 and thus rotatably located on the interior of the hollow pillow box 10.

A pair of reciprocating operating arms 21 each have their lower ends removably secured as at 22 to the opposing faces of the gear wheels 20 respectively. The upper ends of the arms project beyond the upper end of the pump casing 6. It is to be understood that the lower ends of the arms 21 are eccentrically connected as at 22 to each formed integrally with their upper longitudinal edges and adjacent the rear end thereof with laterally extending bearing housings 23, each housing provided with a longitudinally extending groove 24;

A shaft 25 is rotatablymounted in the bearing housings 23 and held therein by'the bearing plates 26 which are removably secured to the housings 23 as illustrated at 27. The shaft 25 has secured thereto for rotation therewith, the gear wheels 28 which are adapted to mesh with thegear wheels 20 and are of a diameter less than the gears 20 so as to cause an increased rotation of the gears 20 for reciprocating the arms 21. A collar 29 is removably secured to the upper end of the casing 6 and surrounds the sucker rod9. A vertical arm 30 is secured to the collar 29 and has its upper end directed inwardly in a substantially horizontal plane and terminates into a guide 31 through which is adapted to be slidably mounted the sucker rod 9. An inverted U-shaped guide 32 is secured by its arm portions to the opposing faces of the arms 21 adjacent the upper end thereof and it is provided centrally of its web with a bearing 33 which is removably secured as at 3st to the sucker rod 9 adjacent the upper end thereof, thereby upon movement of the arms 21 and the rotation of the gears 20, the sucker rod will be reciprocated in the pump casing and cause the operation of the pump. A fly wheel 35 is secured to one end of the shaft 25 and is located on the exterior of one side wall 12 of the hollow pillow box 10.

This fly Wheel facilitates the'c'onneotion and rear walls resting on said base and said rear wall being of a greater height than the front wall, said side walls having their ends bent and overlying and secured to the front and rear walls and being inclined from their ends to a point intermediate their ends to conform to the height of the front and rear walls, outwardly extending bearings formed on the side walls at a point intermediate their ends, stub'shafts journaled in said bearings and projecting beyond the inner faces of said side walls, gears secured to the inner ends of said shafts and lying in close proximity to the inner faces of said side walls, means connecting said gears to the sucker rod of a pump, lateral ears formed on the lower edges of the side walls and secured to the base, outwardly extending and horizontally disposed bearings formed on the upper edge of the side walls adjacent one of their ends, a power shaft journaled in the last named bearings, and means connecting the power shaft to the gears;

In testimony whereof we affix our signatures in the presence of two witnesses.

HENRY F, ALEXIS, MAGNUS OLSON. Witnesses:

OTTO H. BLooMBnRG, M. G. GEsLIN. 

